<template>
  <div class="SonA">
    我是儿子A
    <GrandSon></GrandSon>
  </div>
</template>

<script>
import GrandSon from './GrandSon.vue';
export default {
    components:{
        GrandSon
    }
}
</script>

<style scoped>
.SonA {
    border: 3px solid #000;
    margin: 10px;
    border-radius: 6px;
    height: 200px;
}
</style>